Seasonal dynamics of prey utilization and individual specialization in a generalist spider in a pear orchard
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F21%3A00119762" target="_blank" >RIV/00216224:14310/21:00119762 - isvavai.cz</a>
Alternative codes found
RIV/62156489:43410/21:43920208
Result on the web
<a href="https://doi.org/10.1016/j.biocontrol.2021.104763" target="_blank" >https://doi.org/10.1016/j.biocontrol.2021.104763</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.biocontrol.2021.104763" target="_blank" >10.1016/j.biocontrol.2021.104763</a>
Alternative languages
Result language
angličtina
Original language name
Seasonal dynamics of prey utilization and individual specialization in a generalist spider in a pear orchard
Original language description
Populations of generalist predators are often comprised of a mixture of specialist and generalist individuals and this intraspecific variation in prey utilization may affect pest suppression. However, little is known about seasonal changes in prey utilization by generalist predators, especially during winter, when some generalist predators exert strong biocontrol effects. We used prey preference experiments on Philodromus cespitum (Araneae: Philodromidae) and molecular gut-content analyses of Philodromus spp. (dominated 85% by P. cespitum) to study the dynamics of spider specialization in a pear orchard during the non-growing season. In the laboratory, P. cespitum preferred springtails (Collembola) over the pear psylla, Cacopsylla pyri, an important pest of pear. The presence of springtails in guts of Philodromus spp. did not affect detection of psylla by molecular gut-content analysis in specimens collected from the pear orchard. The philodromid population comprised of a mixture of specialists and generalists in winter, but was composed mainly of generalists in spring. Greater variation in prey utilization during winter most likely reflects a patchy distribution of prey and philodromids switching to a less active hunting mode. Seasonal specialization of individual generalist predators could be the result of their ability to change hunting mode in response to changing environmental conditions and prey distribution. Our study demonstrates that alternative (collembolan) prey are unlikely to affect philodromid predation on psyllids and suggests that changes occur in the spatial structure of predator-pest interactions from winter to spring.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10616 - Entomology
Result continuities
Project
<a href="/en/project/QK1910296" target="_blank" >QK1910296: Effectiveness of new techniques for regulating harmful factors in fruit growing</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Biological Control
ISSN
1049-9644
e-ISSN
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Volume of the periodical
163
Issue of the periodical within the volume
November
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
„104763“
UT code for WoS article
000700603300006
EID of the result in the Scopus database
2-s2.0-85115036990